Punch-holder mechanism



Nov. 26, 1929. R. 1 wlLcox PUNCH HOLDER MEGHANISM Filed May '7. 1926 2 Sheets-'Sheet 1 INVENTR v Rdzardlleser M760.:

ATTORNEY Nov. 26, 1929.

R. L. WILCOX PUNCH HOLDER MECHANISM Filed May 7. 1.926

2 sheets-sheet 2 Patented Nov. 26, 1929 imm RICHARD LESTER WILCOX, OF WATERBURY, CONNECTICUT, ASSIGNOR TO THE WATER- IBTJ'RY FARREL FOUNDRY AND MACHINE COMPANY, OF` TATERBUPJY,` CONNECTI- CUT, A CORPORATION OF CONNECTICUT PUNCH-HOLDER MEOHANISM Application filed May 7, 1926. Serial No. 107,381.

This invention relates to a. new and improved punch holder mechanism of the type commonly used in heading, upsetting machines or the like.

It isthe object of this invention, among other things, toprovide a mechanism of this character, wherein its relative position may be varied with the maximum facility and minimum inconvenience; that will withstand great strains Aand shocks without breaking or crushing; and will be self-contained, that 1s, the `adjustment mechanism, etc., associated with the punch holder` rather than with adjacent mechanism.

To these, and other ends, my invention consists in t-he punch holder mechanism, having certain details of construction and combinations of parts, as will be hereinafter described and more particularly ,pointed out in the claims.

VReferring to, the drawings, in which like numerals of reference designate like parts in theseveral figures;

Figure 1 is a side elevation of my new and improved punch holder mechanism;

Figure 2 is a frontview of a portion thereof Figure S is a sectional View, taken generally upon the plane indicated by line 3-3 in Figure 1; and

Figure 4 is a sectional plan view of a portion thereof, taken generally upon the plane indicated by line 4-.-4 of Figure 2.

This type of mechanism is. used to hold the punches of a header, upsetting machine or the like. It' generally moves in two paths, one'toward and away from the work piece, and the other lat substantially a right angle thereto, so that the punches may be successively presented in linewith the work piece withl which it is brought into Contact during the Operations of the machine.

It is essential that this type of device be both rigid and strong to withstand the severe shocksV and strains to which it is subjected, and at the same time permit of very iine adjustments in substantially all directions, so as'to insure alignment of the punches with the workpiece as presented for operations thereon.

With such mechanisms now in common use their structure has such inherent weaknesses that the parts not only frequently break but sometimes are compressed by the pressure applied thereto, and the means adopted for adjusting the punch holder have in some measure been responsible for such weakness and are more or less complicated and so located as to be practically inaccessible. These, and other objections, to such mechanisms as are now generally in use are overcome in my present invention.

In ythe embodiment of my invention, as shown and described herein, 10 indicates the punch slide, whichvhasfa vertical movement v relatively to the reciprocatory gate 11, transmit-ted throughthe plate 12 by mechanism, not shown, and constituting no partoif this invention. f y e The punch holder 13 is constructed of a single block of metal, having a projecting lug 14 upon one face, within which are secured the punches 15 and 16 by the key bolts 17, or the like. Near the upper end of the die holder is an aperturev18, usually cylindrical in form, and at the bottom a'rectangular slot 19.

j This punch holder is connected with the slide by the studs 20 and 21, both of which pass through openings in the slide and held against rotation by suitable dowels 22. The shank of the stud 21 is of less diameter than the aperture 18 and upon the outer end thereof is a nut 23 having a washer formed integral therewith, or separably, asmay bedesired.

Thestud 20 passes through an opening in the block 24, which latter is received within the slot 19 to permit the punch holder to slide yrelative thereto, and hasa nut 25 `upon the outer end thereof. v

-Threaded through each side ofthe die holder are the screws 26, the inner ends of which impinge against the shanlof the stud 21.

' Within the openings 27, which are arranged substantially parallel with each other, are the adjusting rods 28-28 the inner lower ends of which are beveled as at 29, and engage similar beveled faces'inthe two upper corners of the block 24, substantially as shown in Figure 3.' Threaded into4 each of these openings,

near its upper end is a screw 30, the lower end of'which contacts with the upper end of the rods 28.

The die holder is assembled with the slide by meansof the studs and 21 substantially as shown in Figure 1, being, held tightly against the face of the slide by tlienuts. 23..

and 25, respectively. As thus associated with Ythe slide, the holder may be moved'laterally relatively Yther'etosubstantially at Vright angles to the axis of the rods 28 or in either one or both of two arcs, as may be desired or necesV sary tobring the punches into a proper aligned position. y

To move the punch holder' laterally substantially at right angles to the axis ofthe rods 28, the screwsr 26 are loosened, then the screws 30, thus releasing the pressure of the rods 28 uponthe block 24. Then oneY of the sition. The punch holder ismoved in a lmited circular pathV by manipulation of the screws 26, the center of this arc Ubeingthe axis of the stud 20. A similar circular movement maybeobtained about the axis of the stud 21, by keeping theinnerends-ofV the screws 26 against the stud 21 and then manip* ulating the screws 30.. y

With this structure, all the parts that require manipulation forthe pur ose-ofadjustment,`that is, the screws 26 an 30, are at the upperend of the punch holder where they are readily accessible tothe machine operator.

The punchholder, as shown, has a smooth fiat back, as well as the face of the slide, and without. an intermeshing` engagement, one with the other, hence the punch slide may be made ofa very hard flat piece of metal which requires but little tooling tovfinish and'has no opening through its face to receive project.- ing portions 'of thepunch holder to rweaken it as inthe slides heretofore gener-ally made. As a "result of thesediiferences this punch slide ywill withstandr a4 very substantially greater. pressure than has heretofore.. been possible with theold type. `of punch'. slide. Hence, withmerely.thesubstitution of my improved punch holder mechanism, the'same machine will operate Aupon, material `ofgreater hardness .and larger; diametergthan with the old type. of'such mechanism, withoutibreakage .or compression `of the. parts,.and with the minimum loss of time. andY inconvenience in acquiring the required adjustments;

Itwill also be seen that the` slide, as Ishown in Figure 1, has asolid pressurefreceiving face l31 disposed .oppositeto the punches and rear.- wardly thereof. It will further. be, noted that ,more punch recesses@ Slot and an aperture.;

a block withinthe slot; adjustingrcds movably mounted-in the punchlholderby threaded means adjacent to the'top thereof, which rods are upoiropposite sides of the recesses and engage said block, and move the punch holder laterally uponthe block, a slide; and means,

as bolts, connected with said slide, one of which projects through 'saidlaperture and the otherthrough an opening in the block, have ing nuts thereon forseeuring the holder to the slide, that portion of theslide adjacent to the punch holder beingl solid, except for the-openings therethrough for -said bolts.

2. A punch holderhavingtherein punch retainigmeans, la slotand. anI aperture; a block within the slot; Vand-means within 'the punch holder engaging the block-for moving the punch holder upon the block; rotatingmembers-for actuating said means; f a slide, and means, as bolts, orsecuring thepunch holder to the slide, the face of the .punchholdfz eradjacent. to theslide beingstraightwithv out openings therein exceptv said slot and aperture and .the face of the slide; being straight andsolid, without. openings therein except those providedor the belts.

3. In mechanism of the character der:-

scribed; a. pu'nchholder having one .on more punch retainigmeans, a slotand an aperture; a block within the slot; means ccnnectedwith the punch holdery and engaging .the block for moving the punch holder. laterally; a slide; bolts connected with theslide, one ofiwhich projects through the block and the other through the aperture, the crosssectional varea of this latter bolt'being less than the. aperture; and screws threaded into the. holder upon opposite sides of and ,engaging the bolt within the aperture to move the punch holder relatively to the boltqandsecuring the, same in its adjusted positions.

4. In mechanism of the character def scribed; a slide; companionfboltsconnected with and'projectingfrom onev facethereof; a j block j ournaled on j. the projecting v-portiion of one of said bolts-in advance; of theface ofthe slide.; a punch holder having a slot 1 therethrough to receive.. the. block and an aperture therethrough to `receive the. `other bolt; and.-means connected with-the. punch holder, for moving the. same relatively tothe axis of thebolt upon which theA .bleek is jour.-

naled;

5.. In mechanismfoithe character.described; a slide; companion bolts connected with andprofjecting from onefface thereof; a block journaled on the projecting -prtion of one of said bolts in advance of the face of the slide; a punch holder having a slot therethrough to receive the block and an aperture therethrough to receive the other bolt, said aperture being of greater cross sectional area than that of the bolt; and means connected with the punch holder for moving the same relatively to the axis of the bolt upon which the block is journaled.

6. In mechanism of the character described; a punch holder having therein one or more punch recesses, a slot and an aperture; a block within the slot; adjusting rods mounted in the punch holder upon opposite sides of the recesses, which engage said block; threaded means engaging the rods adjacent to the top thereof, for adjusting the rods, and the punch holder laterally upon the block; a slide; and means as bolts, connected with said slide, one of which projects through said aperture and the other through an opening in the block, having nuts thereon for securing the holder to the slide.

7. In mechanism of the character described; a punch holder having therein one or more punch recesses, a slot and an aperture, the slot being below said recesses, and the aperture upon the opposite side of the recesses; a block within the slot; means for adjusting the punch holder, that is in part movably mounted in the punch holder upon opposite sides of the recesses; threaded means in and adjacent to the top of the punch holder for imparting movement to said adjusting means; a slide; and means, as bolts, connected with said slide, one of which projects through said aperture and the other through an opening in the block, having nuts thereon for securing the holder to the slide.

8. In mechanism of the character described; a punch holder having therein one or more punch recesses, a slot and an aperture; a block within the slot; adjusting rods movably mounted in the punch holder upon opposite sides of the recesses; threaded means adjacent to the top of said rods which engage and through their' engagement move the punch holder laterally upon the block; a slide; and means, as bolts connected with said slide, one of which projects through said aperture and the other through an opening in the block, having nuts thereon for securing the holder to the slide, that face of the slide adjacent to and in contact with the punch holder being solid opposite the punch recesses.

9. In combination with a punch holder, and a punch carried thereby; a slide having a solid pressure receiving face disposed opposite to the punch and rearwardly therefrom and means to attach the punch holder to the slide and to effect adjustment of the punch holder on the slide, said adjusting means being carried substantially Wholly by the punch holder and upon opposite sides of the punch therein.

10. In combination with a punch holder, and a series of punches carried thereby; a slide, means carried substantially wholly by the punch holder to effect adjustment of the punch holder on the slide; and means to attach the punch holder to the slide, said slide having a substantially solid pressure receiving face disposed opposite to the punches and rearwardly thereof and said punch holder having a solid pressure receiving face disposed opposite to said face of the slide.

11. In combination with a punch holder having a. substantially solid pressure receiving face and a punch carried thereby; a slide having a solid pressure receiving face disposed opposite to the punches and rearwardly thereof; members connected with the slide and extending beyond the pressure receiving face of the slide, one member projecting through an opening in the punch holder of larger cross sectional area than said members a block having an opening therethrough that receives another of said members and is slidable in the punch holder and spaced from the punch means carried by the punch holder to shift the position of the block within the punch holder; and means, carried by the punch holder, that co-operate with the member in the said opening in the punch holder to cause relative movement of the punch block on the slide.

12. In combination with a slide; a punch holder having punch retaining means and having an aperture and a slot, both spaced from the punch retaining means; a block slidable in the slot and having an opening; means extending through the aperture and opening to connect the punch holder to the slide, the aperture being of a size to permit movement of the punch holder relative to the slide; and

means carried by the punch holder to effectV adjustment thereof relative to the slide and about the means whicheXtends through the block as a fulcrum.

In testimony whereof, I have hereunto af iXed my signature.

RICHARD LESTER WILGOX. 

